4890 Servopulser Control Unit

4890 Controller

The 4890 32-bit digital controller incorporates a high-speed DSP, high-resolution A/D converter and high-performance processor. Its features include 2-degree-of-freedom PID control, auto-tuning and realtime gain adjustment developed especially for testing systems. The combination of these features both heighten control precision and dramatically improve ease of use compared with existing controller models. A variety of tests can be easily performed by using the Windows-based GLUON software which offers comprehensive customization wizards.



Type 4890
Logical operation resolution 32 bits
Loading waveform Sine, haversine, triangular, hold rectangular, and combinations of these
Special waveforms Slow start/stop, sweep, arbitrary
Frequency 0.00001 to 500 Hz
Ramp speed 1×10-9 to 100 full scale/sec
Hold time 0.01 to 1×109 sec
Cycle counter 1010
Measurement amplifier type Test force/displacement (standard accessory)/strain/elongation/voltage inputs
* 6 additional optional amplifiers can be added.
Measurement amplifier functions Rangeless, auto-zero function, automatic recognition and calibration functions
Measured value display Instantaneous values or upper/lower limit peaks values are displayed in engineering units
Number of control channels Max. 8
Control functions 2-degree-of-freedom PID control
Auto-tuning function
Realtime gain adjustment function
Logical operation control functions (virtual transducer)
Automatic amplitude/mean-value correction function (AGC)
Shockless control switching function
Function to prevent overloading during specimen clamping (sub controller function)
Alarm functions Excessive amplitude detection, low amplitude detection, breakage sensitivity, breakage detection
hydraulic unit alarm, preset count, external alarm I/O
Software GLUON software package for Windows
Size (W × D × H) 205 × 483 × 466 mm (excluding protrusions)
Power requirements 100 ±10 V 50 Hz/60 Hz, 1.0 kVA single-phase

* Appearance and specifications are subject to change without notice.

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